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Name
LESSON
10 1
䉬
Date
Time
Exploring Pan Balances
Find combinations of objects where the weights balance the pans.
Record the combinations below using pictures and words.
Example:
One nickel weighs about as much as 5 blocks.
1.
One
weighs about as much as
.
One
weighs about as much as
.
One
weighs about as much as
.
One
weighs about as much as
.
2.
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3.
4.
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Name
LESSON
10 1
䉬
Date
Time
Penny Weights
The materials used to make a penny were changed at the beginning
of one of these years: 1981, 1982, or 1983. As a result, the weight of
a penny has changed. Your task is to find the year the weight
of pennies changed.
1.
Compare 1981 pennies to 1982 pennies.
Put ten 1981 pennies in one pan and ten 1982 pennies in the other pan.
Do the pans balance?
2.
Return the pennies to their correct containers.
Put ten 1982 pennies in one pan and ten 1983 pennies in the other pan.
Do the pans balance?
3.
I think penny weights changed beginning in the year
because
4.
Why do you think it is better to compare the weights using 10 pennies for each year
rather than only 1 penny for each year?
Why do you think they changed the materials used to make a penny?
296
Copyright © Wright Group/McGraw-Hill
5.
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1 2
4 3
First to 100 Problem Cards
How many inches
are there in x feet?
How many quarts
are there in
x gallons?
What is the
smallest number of
x ’s you can add to
get a sum greater
than 100?
How many
centimeters are
there in x meters?
2
1
1
ᎏᎏ
2
1
ᎏᎏ
10
x ⫹ 998 ⫽ ?
of x ⫽ ?
5
It is 102 miles to
your destination.
You have gone
x miles. How many
miles are left?
6
What time was it
x minutes ago?
What whole or mixed Is x a prime or a
number equals
composite number?
x divided by 2?
Is x divisible by 2?
The time is
11:05 A.M. The train
left x minutes ago.
What time did the
train leave?
10
11
There are x rows
of seats. There are
9 seats in each row.
Which is larger:
2 º x or x ⫹ 50?
How many seats
are there in all?
14
15
12
Sargon spent
x cents on apples.
If she paid with a
$5 bill, how much
change should she
get?
16
Copyright © Wright Group/McGraw-Hill
456
What time will it be
x minutes from now?
8
In what year was
Freddy born?
13
4
7
9
Bill was born in
1939. Freddy was
born the same day,
but x years later.
x
10
Is ᎏᎏ less than 1?
3
If x people share
1,000 stamps
equally, how many
stamps will each
person get?
1⫺x⫽?
of x ⫽ ?
Is 50 º x greater
than 1,000?
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Name
Date
First to 100 Problem Cards
The temperature
was 25°F. It dropped
x degrees.
What was the new
temperature?
Each story in a
building is 10 ft high.
If the building has x
stories, how tall
is it?
17
Is x divisible by 9?
22
21
Find the perimeter
and area of this
square.
x cm
Copyright © Wright Group/McGraw-Hill
25
What is the range?
26
Is this more than
25%, less than 25%,
or exactly 25% of
the students?
29
100
x
2 º x or ᎏᎏ ?
19
20
Shalanda was
born on a Tuesday.
Linda was born
x days later.
Will had a quarter
plus x cents. How
much money did he
have in all?
On what day of
the week was
Linda born?
23
24
x2 ⫽ ?
50% of x 2 ⫽ ?
x°
x out of 100 students
voted for Ruby.
(3x ⫹ 4) ⫺ 8 ⫽ ?
20 º x ⫽ ?
Which is larger:
What is the median
of these weights?
5 pounds
21 pounds
x pounds
x cm
1 2
4 3
continued
18
Is x an even or an
odd number?
Name all the
whole-number
factors of x.
Time
30
?°
27
28
There are 200
students at Wilson
School. x % speak
Spanish.
People answered a
survey question
either Yes or No.
x % answered Yes.
How many students
speak Spanish?
What percent
answered No?
31
32
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First to 100 Record Sheet
Example: x ⫽ 30
308
Card
Number
Number Model/
Response
Score
20
20 º 30 ⫽ 600
30
x⫽
Card
Number
Number Model/
Response
Score
Copyright © Wright Group/McGraw-Hill
458